200-4R 2-3 shift problem

[BuickGNMan]

I had a local guy (dumb move!) rebuild my tranny. $1200 in labor & parts plus my addiion of the 9" AC Non LU converter (3200 stall) and the related pump & a few other Hi Pro parts. I can't remember the shift kit I used purchased from Poston. Here's what's happening... It works fine with normal driving but laying into the throttle pushes my 2-3 shift deep into redline sometimes even hitting the rev limiter and on other occasions the shift don't seem to hit hard or sometimes takes a long time to shift, almost as if it's slipping hard before hitting 3rd. I back right off when this happens because I'm afraid I'm frying a band or clutch or something? I had my tranny guy try a different spring and it didn't do much. He tells me there's nothing wrong. It's my car and I know a problem! Can I possibly correct this myself with the original spring from my kit or should I bite the bullet and bring it to a good 200-4R tranny guy and have him look it over? Thanks for the help!
Mike

 

[MeanBuicks]

Sounds like the direct clutch and intermediate servo clearances are too wide, causing a flare-up. I would recommend having a good 2004R guy assess the situation for you.

 

[Lee Thompson]

fluid

Have you tried running with the trans a quart overfull?

 

[jose]

Whats going on with your boost when this happens?When your cruising in 2nd and then you floor it ,is this when it happens.I am havng this problem.If i give a little boost (1-2)and then floor it,it's fine.But for some reason cruising at 30-40 mph,if i accellerate all at once my rpm's will shoot well past 4500 if i let it,the boost shoots up as well but my car wont respond.My tranny shifts well in any other gear and during normal driving conditions(no boost).
I had my trans rebuilt about 15 K ago with a shift kit.this problem just came about.I contacted transgo(shift kit),they said to check the servo & govervor ass.



Good luck.